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Featured researches published by Jan Macuda.


Journal of Environmental Radioactivity | 2017

Radioactivity in wastes generated from shale gas exploration and production – North-Eastern Poland

Paweł Jodłowski; Jan Macuda; Jakub Nowak; Chau Nguyen Dinh

In the present study, the K-40, U-238, Ra-226, Pb-210, Ra-228 and Th-228 activity concentrations were measured in 64 samples of wastes generated from shale gas exploration in North-Eastern Poland. The measured samples consist of drill cuttings, solid phase of waste drilling muds, fracking fluids, return fracking fluids and waste proppants. The measured activity concentrations in solid samples vary in a wide range from 116 to around 1100 Bq/kg for K-40, from 14 to 393 Bq/kg for U-238, from 15 to 415 Bq/kg for Ra-226, from 12 to 391 Bq/kg for Pb-210, from a few Bq/kg to 516 Bq/kg for Ra-228 and from a few Bq/kg to 515 Bq/kg for Th-228. Excluding the waste proppants, the measured activity concentrations in solid samples oscillate around their worldwide average values in soil. In the case of the waste proppants, the activity concentrations of radionuclides from uranium and thorium decay series are significantly elevated and equal to several hundreds of Bq/kg but it is connected with the mineralogical composition of proppants. The significant enhancement of Ra-226 and Ra-228 activity concentrations after fracking process was observed in the case of return fracking fluids, but the radium isotopes content in these fluids is comparable with that in waste waters from copper and coal mines in Poland.


Ecological Chemistry and Engineering S-chemia I Inzynieria Ekologiczna S | 2016

Evaluation of Environmental Hazard During Shale Gas Exploration Process in Poland in the Years 2012-2014

Monika Konieczyńska; Jan Macuda; Stanislaw Nagy; Jakub Siemek

Abstract This paper is a summary of results of environmental analysis conducted by PGI-NRI, AGH-UST within the monitoring of natural gas prospecting in unconventional deposits. All elements of natural environment were analyzed and on this basis the qualitative and quantitative impact of drilling and hydraulic fracturing of shales could be assessed. Special attention was drawn to the analysis of the physicochemical condition of post-reaction fluids, soil gas in the well pad area and drilling fluids. The results of analysis reveal that prospecting works do not create a significant environmental hazard. Some indices connected, e.g. with the noise climate lightly exceeded permissible values. Nonetheless, if extensive prospecting and production of shale gas are involved, the environmental studies need to be broadened to supplement this report.


Ecological Chemistry and Engineering S-chemia I Inzynieria Ekologiczna S | 2015

Environmental impact of exploration from unconventional gas deposits in Poland

Jan Macuda; Monika Konieczyńska

Abstract Shale formations have been recently treated only as source rocks and sealing packages mainly of conventional deposits. At present shales, which have a considerable concentration of highly mature organic matter appearing in complexes of over 30 m thick are used as unconventional sources for natural gas production with the use of advanced drilling technologies. Natural gas production in such rock formations necessitates performing a horizontal section in the borehole and a big number of hydraulic fracturing jobs. The unconventional shale gas deposits have been prospected also in Poland for a couple of years. Exploration works mainly concentrate on a vast area passing from Pomerania through Mazowsze to the Lublin region in Poland. The analysis of the geologic analyses reveals that the most perspective are shales in the Lower Paleozoic at a depth of 2500 m in the eastern part to about 4000 m in the western part of the area. The paper is focused on the quantitative and qualitative evaluation of environmental impact of natural gas exploration works from unconventional deposits. Special attention was paid to the hydraulic fracturing jobs in shales, which create particular hazard for water and soil environment. These hazards already appear at the stage of preliminary works, when big quantities of chemicals and water for frac jobs are stored in the rig area, and then, during realization of works, when the spent hydraulic fracturing fluid may penetrate the water-bearing horizons in the caprock. The composition of fracturing fluid used in Gapowo B-1A well are given along with the results of chemical analyses of a few parts of spent fracturing fluid samples pumped out from the borehole. The fluid turned out to be high in salt (high specific electrolyte conductance (SEC) and total dissolved substances (TDS) and a high toxicity for most of the living organisms). For this reason the spent fracturing fluid should not enter the environment without control.


Environmental Engineering and Management Journal | 2012

LASER STIMULATION OF Trichophyton mentagrophytes FOR THE ENHANCEMENT BIODEGRADATION OF HYDROCARBONS

Jan Dobrowolski; Alicja Budak; Danuta Trojanowska; Monika Rymarczyk; Jan Macuda


Archives of Mining Sciences | 2014

The Influence of Shale Rock Fracturing Equipment Operation on Atmospheric Air Quality

Marek Bogacki; Jan Macuda


Archives of Mining Sciences | 2012

Analysis of efficiency of drilling of large-diameter wells with a profiled wing bit

Jan Macuda


Archives of Mining Sciences | 2015

Feasibility Analysis of Groundwater Abstraction for Gas Shale Fracturing in the Lublin Basin (Eastern Poland) / Ocena Możliwości Poboru Wód Podziemnych Do Szczelinowania Łupków Gazonośnych W Basenie Lubelskim (Wschodnia Polska)

Robert Duda; Jan Macuda


Problemy Ekorozwoju | 2017

Effect of Drilling for Shale Gas on the Quality of Atmospheric Air

Jan Macuda; Marek Bogacki; Jakub Siemek


AGH Drilling,Oil,Gas | 2017

Monitoring of explosive gases with a portable gas detector Dräger X-am 5600

Jan Macuda; Łukasz Łukańko


AGH Drilling,Oil,Gas | 2017

Many years’ extraction of groundwater in the context of established usable groundwater reserves

Jan Macuda; Ewa Styrkowiec

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Marek Bogacki

AGH University of Science and Technology

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Łukasz Łukańko

AGH University of Science and Technology

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Jakub Siemek

AGH University of Science and Technology

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Magdalena Gaczoł

AGH University of Science and Technology

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Małgorzata Macuda

Poznań University of Economics

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Sławomir Wysocki

AGH University of Science and Technology

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Alicja Budak

AGH University of Science and Technology

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Chau Nguyen Dinh

AGH University of Science and Technology

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Danuta Trojanowska

AGH University of Science and Technology

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Jakub Nowak

AGH University of Science and Technology

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